diff --git a/app/views/packages/packages.py b/app/views/packages/packages.py
index 1a9b106..38aacbe 100644
--- a/app/views/packages/packages.py
+++ b/app/views/packages/packages.py
@@ -180,9 +180,9 @@ class PackageForm(FlaskForm):
 	tags          = QuerySelectMultipleField('Tags', query_factory=lambda: Tag.query.order_by(db.asc(Tag.name)), get_pk=lambda a: a.id, get_label=lambda a: a.title)
 	harddep_str   = StringField("Hard Dependencies", [Optional()])
 	softdep_str   = StringField("Soft Dependencies", [Optional()])
-	repo          = StringField("VCS Repository URL", [Optional(), URL()])
-	website       = StringField("Website URL", [Optional(), URL()])
-	issueTracker  = StringField("Issue Tracker URL", [Optional(), URL()])
+	repo          = StringField("VCS Repository URL", [Optional(), URL()], filters = [lambda x: x or None])
+	website       = StringField("Website URL", [Optional(), URL()], filters = [lambda x: x or None])
+	issueTracker  = StringField("Issue Tracker URL", [Optional(), URL()], filters = [lambda x: x or None])
 	forums	      = IntegerField("Forum Topic ID", [Optional(), NumberRange(0,999999)])
 	submit	      = SubmitField("Save")
 
diff --git a/app/views/packages/releases.py b/app/views/packages/releases.py
index 2199675..f459ee6 100644
--- a/app/views/packages/releases.py
+++ b/app/views/packages/releases.py
@@ -54,7 +54,7 @@ class CreatePackageReleaseForm(FlaskForm):
 class EditPackageReleaseForm(FlaskForm):
 	title    = StringField("Title", [InputRequired(), Length(1, 30)])
 	url      = StringField("URL", [URL])
-	task_id  = StringField("Task ID")
+	task_id  = StringField("Task ID", filters = [lambda x: x or None])
 	approved = BooleanField("Is Approved")
 	min_rel  = QuerySelectField("Minimum Minetest Version", [InputRequired()],
 			query_factory=lambda: get_mt_releases(False), get_pk=lambda a: a.id, get_label=lambda a: a.name)
diff --git a/app/views/users/users.py b/app/views/users/users.py
index a31b1e0..1a81c7d 100644
--- a/app/views/users/users.py
+++ b/app/views/users/users.py
@@ -31,9 +31,9 @@ from app.tasks.phpbbparser import getProfile
 # Define the User profile form
 class UserProfileForm(FlaskForm):
 	display_name = StringField("Display name", [Optional(), Length(2, 20)])
-	email = StringField("Email", [Optional(), Email()])
-	website_url = StringField("Website URL", [Optional(), URL()])
-	donate_url = StringField("Donation URL", [Optional(), URL()])
+	email = StringField("Email", [Optional(), Email()], filters = [lambda x: x or None])
+	website_url = StringField("Website URL", [Optional(), URL()], filters = [lambda x: x or None])
+	donate_url = StringField("Donation URL", [Optional(), URL()], filters = [lambda x: x or None])
 	rank = SelectField("Rank", [Optional()], choices=UserRank.choices(), coerce=UserRank.coerce, default=UserRank.NEW_MEMBER)
 	submit = SubmitField("Save")